/Engine/Source/Editor/SequencerCore/Public/MVVM/Views/KeyRenderer.h
Flag enum signifying states for a particular key or group of keys
enum EKeyRenderingFlags { None = 0, PartialKey = 1 << 0, Selected = 1 << 1, PreviewSelected = 1 << 2, PreviewNotSelected = 1 << 3, AnySelected = 1 << 4, Hovered = 1 << 5, Overlaps = 1 << 6, OutOfRange = 1 << 7, }